6Study of the influence of lignin-engineering on pyrolysis as in Toraman et al. (2018, Journal of Analytical and Applied Pyrolysis and 2016, Bioresource Technology) and Vercruysse et al. (2016, Journal of Analytical and Applied Pyrolysis)

7Study of plant extracts as in Dima et al. (2015, Plant Cell)

8Study of different chemical treatments as in Gómez et al. (2014, BioEnergy Research)

9Study of the influence of lignin-engineering on the lignin-first process as in Van den Bosch et al., (2015, Energy & Environmental Science)